1; RUN: llc -verify-machineinstrs -filetype=obj -mtriple=aarch64-- \
2; RUN: -enable-machine-outliner < %s | llvm-dwarfdump - | FileCheck %s
3
4; Ensure that the MachineOutliner produces valid DWARF when it creates outlined
5; functions. Check that the outlined function has a subprogram, and that the
6; expected DWARF attributes are present.
7
8; The outlined function appears after bar. Skip past the functions we don't
9; care about.
10; CHECK: DW_TAG_compile_unit
11; CHECK-DAG: DW_AT_name	("foo")
12; CHECK-DAG: DW_AT_name	("p")
13
14; Check the high address of bar. This is one past the end of bar. It should be
15; the beginning of the outlined function.
16; CHECK:      DW_AT_high_pc	([[ONE_PAST_BAR:0x[a-f0-9]+]])
17; CHECK-NEXT: DW_AT_frame_base	(DW_OP_reg29 W29)
18; CHECK-NEXT: DW_AT_name	("bar")
19
20; Check the outlined function's DWARF.
21; CHECK-DAG:  DW_TAG_subprogram
22; CHECK-NEXT: DW_AT_low_pc	([[ONE_PAST_BAR]])
23; CHECK-NEXT: DW_AT_high_pc	(0x{{[0-9a-f]+}})
24; CHECK-NEXT: DW_AT_frame_base	(DW_OP_reg29 W29)
25; CHECK-NEXT: DW_AT_MIPS_linkage_name	("[[NAME:OUTLINED_FUNCTION_[0-9]+]]")
26; CHECK-NEXT: DW_AT_name	("[[NAME]]")
27; CHECK-NEXT: DW_AT_artificial	(0x01)
28; CHECK-NEXT: DW_AT_external	(0x01)
29
30define void @foo() #0 !dbg !8 {
31entry:
32  %p = alloca i32*, align 8
33  call void @llvm.dbg.declare(metadata i32** %p, metadata !11, metadata !DIExpression()), !dbg !14
34  %0 = load i32*, i32** %p, align 8, !dbg !15
35  %incdec.ptr = getelementptr inbounds i32, i32* %0, i32 1, !dbg !15
36  store i32* %incdec.ptr, i32** %p, align 8, !dbg !15
37  call void @foo(), !dbg !16
38  ret void, !dbg !17
39}
40
41declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
42
43define void @bar() #0 !dbg !18 {
44entry:
45  %p = alloca i32*, align 8
46  call void @llvm.dbg.declare(metadata i32** %p, metadata !19, metadata !DIExpression()), !dbg !20
47  %0 = load i32*, i32** %p, align 8, !dbg !21
48  %incdec.ptr = getelementptr inbounds i32, i32* %0, i32 1, !dbg !21
49  store i32* %incdec.ptr, i32** %p, align 8, !dbg !21
50  call void @foo(), !dbg !22
51  ret void, !dbg !23
52}
53
54attributes #0 = { nounwind ssp uwtable "frame-pointer"="all" }
55attributes #1 = { nounwind readnone speculatable }
56
57!llvm.dbg.cu = !{!0}
58!llvm.module.flags = !{!3, !4, !5, !6}
59!llvm.ident = !{!7}
60
61!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
62!1 = !DIFile(filename: "something.c", directory: "somewhere")
63!2 = !{}
64!3 = !{i32 2, !"Dwarf Version", i32 2}
65!4 = !{i32 2, !"Debug Info Version", i32 3}
66!5 = !{i32 1, !"wchar_size", i32 4}
67!6 = !{i32 7, !"PIC Level", i32 2}
68!7 = !{!"clang"}
69!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
70!9 = !DISubroutineType(types: !10)
71!10 = !{null}
72!11 = !DILocalVariable(name: "p", scope: !8, file: !1, line: 2, type: !12)
73!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
74!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
75!14 = !DILocation(line: 2, column: 8, scope: !8)
76!15 = !DILocation(line: 3, column: 4, scope: !8)
77!16 = !DILocation(line: 4, column: 3, scope: !8)
78!17 = !DILocation(line: 5, column: 1, scope: !8)
79!18 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 7, type: !9, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
80!19 = !DILocalVariable(name: "p", scope: !18, file: !1, line: 9, type: !12)
81!20 = !DILocation(line: 9, column: 8, scope: !18)
82!21 = !DILocation(line: 10, column: 4, scope: !18)
83!22 = !DILocation(line: 11, column: 3, scope: !18)
84!23 = !DILocation(line: 12, column: 1, scope: !18)
85
86